%0 Journal Article %T Bioenergetic constraints on the origin of autotrophic metabolism %A Alexis S. Templeton %A Eric S. Boyd %A Maximiliano J. Amenabar %A Saroj Poudel %J - %D 2020 %R 10.1098/rsta.2019.0151 %X Autotrophs form the base of all complex food webs and seemingly have done so since early in Earth history. Phylogenetic evidence suggests that early autotrophs were anaerobic, used CO2 as both an o.. %U https://royalsocietypublishing.org/doi/10.1098/rsta.2019.0151